To troubleshoot and address issues with receiving notifications for a specific Teams channel, do the following:

1. Check if your notification settings are set up correctly
   Open the specific channel
   Select More options
   Choose Notification settings
   Make sure Channel notifications are turned on and other settings are configured to your preference

2. Check your device settings
   Make sure you have enough available storage
   Ensure the app is allowed to run in the background and access notifications
   Confirm the app is updated to the latest version

3. Verify your profile
   For notifications to work properly you need an email attached to your account
   Go to your profile
   Make sure your email address is up-to-date and correct

4. Verify the General notification settings
   Open the general notification settings for Teams
   Check that all options have been set for all channels